Cryptolocker is a ransomware trojan that targets windows computers and is activated and run when people click and run an infected email attachment.
The most common one in Australia is the Australia Post email attachment
After clicking this link your files will be encrypted ( you cannot access your files unless you have the encryption key ) and you have choices:
- Pay the ransom – only and only if you have not backed up and there is NO guarantee you will get the key to open your files
- Wipe your computer and reinstall from a known good copy of Windows , this will have to be done even if you pay the ransom and get access to your files
- Restore your files from a backup ( you do backup, dont you ) after you have wiped your computer and reinstalled from a known good copy of Windows
Can you STOP your computer getting Cryptolocker ?
Yes with two choices
You can run Cryptoprevent , there is a FREE edition
There is information on the new Malwarebytes AntiRansomware software which you can download from here